Tamperproof transmission equipment



July 2, 1935. H. c. RIESINGER 2,006,653

TAMPERPROOF TRANSMI S S I ON EQUIPMENT Filed Sept. 8, 1931 2 Sheets-Sheet l mwh ATTORNEY July 2, 1935. H. c. RIESINGER TAMPERPROOF TRANSMISSION EQUIPMENT Filed Sept. 8, 1931 2 Sheets-Sheet 2 8 l ll q 50 23 f 24 47 ii I @5 45 43 16 56 '50 \m 20 7 8 Fr 5 Fr 5 55 5 55 619 52 59 46 1?] 27 29 38 /y if 24 20 20 10 9 25 F1 -6- Fl i.

INVENTOR Jfirhrf' J/fairly Patented July 2, 1935 UNIT ED S-TA'FE @F-FIE'EQ TAIWPERPROUF TRANSIKISSION EQUIPMEN'D Herbert G. Riiesinger Daytbn, Oh'io, assignor,.by

mesne assignments, to Central United'Natibnal Bank; Cleveland; Ohio, as trustee Application September-r8, 1931;.Seria1 561 616:

6 Claims. (or; vi -606)" Heretofore there: has been considerable-trouble This structure forms a part of the automobile withndishonesti drivers of. taxicabs in particular andiit isi necessary forirtheitaximeter;.theBspeed by reasonioflthe fact thatithe driver. disconnects ometert-or othertmileage instrumenttd bexiriven the driving equipment from the taximeter so from. the spindlefiz i 7 -5 that: the taximeter will not: be operated. The Lhavei provided mhexagonal nut I with fe *5 object of I this invention. is to provide means male threads adapted to be tightly screwed wherebyiit isavirtually impossible for him-to thus onto the nut 61' geaiifi box casing- 9 -may defraudihis employen now he slipped: over the: reduced portion It! Various means have heretofore beenwused totry of the nut 12 'I -he casing 9 is provided with a 1o tozputla stopdtoithis eviLwhich means included lug I l?havingi'aziiinnensuriace I2kwhichexact1y putting; aiseal. connecting one or more of: the fitsthe hexagonal part ofi the=-nut 'i so that partslattthe:transmission outlet, but these seals after theicasing 'is ont'o' the nut lithe haveibeenzbeneath'the floor board ofithe carand casing canno't be rotated without rotating: the iff they were: broken they would not be'easy-to cle-' mit I2 13 tests Iniact; the only way that it could bede- The =reduoed portion: [0 of the nut 1 forms a 5 tect'edfwould beior apersonto crawl-beneath bearin'galfi A nuti Miis adapted to be slid into the car and examine the seal. One of the obtheother enti of tl-iecasing- 9 -remote-from the jects of thisinvention is to eliminateany seal nut-'i'li-wl'iich nut is alsofihexagonakand is li'eld sazpositionedrth'at it cannot readily be seen. against rotbition a'ilug' fi' which is exactly my While-J have referred 'in particular to taxisimilar to thevlug l l and'prevents-thesaid nut 2'0 meters; my equipmentisdesigned tobe'used in ll 'from being rotatedi- The nut |4= is provided connection: with speedometers; odometers; and with male threads I6 whicl'r receive a coupling gthe tdevi'gesawmch'wguld.be ri e s ovin lfl c'onnected toca housingl8i which leads -to the pas-riot thervehiclep .7 speedometer. The nut I4 is=provided with a 23 Referring to'the drawings: bearing- I9.- A shaftz'lflfiis mounted' inthebear- 25 Figure 1 islal rear view of ataximeter showing in s ltl amli Mimi-101i shaft-i is connectedtothe my; improved; tamper-proofdriving equipment spindleii which: isclriven -by thetransmission attachedihereto. shaffi by of a t'on'gue 2 'l carried by the Eigure 2 is' a side elevational view thereof? salcl shait which fits into aEI'O I101? in so Figure 3Jisan.e1eva,ti na,1lview-offthegarsbbx thvspinclle. 5 'I'fiei' sll'fift zmiS-prOVided' with but-rotated 180 degrees from the position-shown fla ges 22 and which bam a n he nn r in Figure 2. Certain of the parts are broken ends of tli'e nuts Ill-"end" and actas antiawayso as t'o'show the internalmechanism: thmst bearings; The sh'aft 2U is also provided Eigure is-- an end elevational view'of'thege'ar with a dijivi W 213 r at box; 'IIIEEImtSi'I andi'lf areiprovided with circum'- Eigurezfi is-azside elevationalview of the gear ferentiuliarcuatezchazmelsiwand 26: The casbox partly in cross: section 1 and" looked at from .iIIgF- s w v' d w 5 8 v 21 ha n thessamevdirection as shown in Figureli lafgeiiipa'rfiilza'fl AiSBFBWTZBTlextfidsiifihroughithe Eigurejtfi, 151a,; crosstsectionali view-.igf" the gear bblBE TH and into: thei-b'orec 28: and a nut 30 re.-

4@ box takenion theline 6 G ofvFigure531but, h rceivessaiitserew; whlchxnutirsll: is -providediwith ingthe drive pinionand driven shaft notin cross bev led Patt 3! which fits into. the channel 25 section; v bring-thereby lockingmthe nutsil or H! intoith'e Figure 7-is: a'-cross sectional view'on the line housingimiand efl ufiifl' is -held; against rota 1+4 of Figure B butEshOWing-thelocking means tiombw means e su ce' en a 4i not iiir cross section; ing tI'IG' 'SldG WEHS of: therchannelssZSr or 26; It 15 gimme-percentage of automobile t i i's thereforeaimpossibl to:rotate:thevnut 30iand rturedftodayare provided with a tran mi o it:is'ilikewiseeimpossiblamosremove the. nuts utl'eti'in t transmissionihousing. l: of t ti or: l fromithei casing-a aiuntil the: screws 29 have mobile; In the transmission housing there is beenl-remoyedl a transmission shaft 2 provided with awonma The hou in is provided' with a circular 50 whichsis; of course; rotated corresponding to the opening i32 which receivesz a-ibearing fi inlwhich movement ofthe-vehicle. The worm 3 meshes isil'ouma'ledialidrivemshait134i Thelbearingl with drives a Worm gear 4 mountedon a is providedlwithllateralli extendingv'armsf 3'5tsand SpirIdIe-S- journaled inthe transmissionliousing 36' wh1cii are: providezhwith bores 31 through 56" H Tlr'e spindle 5 passes througha malei nut 6; Which the screws s 29 extendi'so that the: said is connected to the driven shaft34.

screws hold the bearing 33 in place. A cap 38 fits onto the circular flange 39 of the bearing 33 and is held against rotation relative to the said bearing by means of a flat surface 48 forming a part of the cap 38 which rests against a flat surface 4 of the flange 39 which is carried by the bearing 33. The cap 38 is provided with arms 42 and 43 whichv are provided with recesses 44. The heads 45 of the screws 29 extend upwardly into the said recesses. It is impossible. to rotate the cap 38 relative to the bearing 33 r for the flat surfaces 48 and 4| prevent and the screw heads 45 extending within the recesses.

44 likewise prevent it. It is, therefore, ob-

of a meter bracket 53 on which they taximeter 54 is mounted. The upper end of, the shaft housing 49 is secured to a, connection 55 provided withla straight channel56 whichreceives a bolt 51 which passes through theprojection 52. -This bolt serves a double, function of preventing the housing49 from being'pulled downwardly'out of the projection 52 and also the purpose of preventing the shaft housing 49 from being rotated so as to unscrew the connection 48 fromj' the bearing 33., The bolt 51 is provided with a hexagonal bolt-head58 and a seal 59 passes through this boltqhead and a bolt 50 carried by the meter bracket. It is,rtherefore, impossible to unscrew .this bolt so, as to release the shaft housing 49 withoutbreaking thejseal 59 and if the seal 59 is broken, it will beobvious to everyone aroundthe cab thatvit has been broken for it is in plain view. Thedriven shaft 34 is provided witha worm gear 8|. It will be remembered that the driven shaft34 is also connected with the flexible shaft 50 andthe upper end of this flexible shaft is connected with the driving mechanismof themeter as is well known in the art and forms no part of this invention.

The taximeter is, therefore, driven by the rotation of the transmission shaft 2 which drives the worm gear 4, spindle 5,- shaft;;28,- driving worm 24, worm gear 6|, driven shaft 34 and flexible shaft 58 which drives the taximeter.

It will be rememberedthat the transmission of the automobile is underneath thefloor board and if the gear I isv first, connected to .the housing 9 and if it were necessary tothen rotate the housing in order to screw the' nut 1 onto the male nut 6, we would frequently find. that this is impossible on account of interfering mechanism underneath the car.. The same thing would be true if we wouldflrst screw the nut 1? onto the nut 6 and then had to; screw the .housing 9 onto the nut I.

In order to screw it on, it would be necessary to rotate the housing :9which, as above mentioned, is-frequently impossible on account of interfering mechanism. Particular attentionis, therefore, called to'the fact that it is not necessary to rotate the housing 9 at all. The nut 'i:is first. screwed on the nut '6 and the housing 9'is then slid onto; the nut '1.

housing 9 relative to the nut l on account of the lugs II and the shape of the nut I, as is clearly shown in Figure 4.

Let us consider the difficulty that the driver would have in disconnecting any of the mechanism in connection with the transmission or the parts driven thereby. He cannot unscrew the nut I from the nut 6 unless he rotates the housing 9 and this is prevented by the shaft housing 49. He cannot disconnect the nut 1 from the housing 9 on account of the lug H. On'the other hand, he cannot take out the shaft 29 unless he can get the nut l or M off and if he would succeed in getting one of the nuts off, if he attempts to move the shaft 20 longitudinally so as to remove it, the worm gear 6| would be rotated by the longitudinal movement of the shaft 28 and it would engage either the flange 22 or the flange '23, which is wider than the space between the teeth of the gear 6|, which would prevent the shaft 28 from being moved longitudinally out of its housing. His next 'attempt might be to rotate the nut 30. If he could do this, he could remove the entire housing 9 from the bearing 33 which would allow him to move the worm gear 6| out of .mesh with the driving'worm 24. He cannot, however, rotate the nut 38 on account of the beveled surface 3| thereof. His last hope would be to get at the screw 29 and rotate it but he cannot get at this screw for it is housed within thecas ing 9, bearing 33 and cap 38. He cannot remove the cap 39 because it is held in place by the shoulder 62 of the connection 48. If. he could remove this shoulder from engagement with the cap ,38 he could reach the screw head 45 but this could only be done by unscrewing the connection 48 from the flange 39 of ,the bearing 33. He can do this provided he can rotatethe flexible shaft 49. The upper end of thisshaft is locked against rotation by means of the bolt 5] and it is well known that these flexible' to do this he.would have to break the seal 59' and, as abovementioned, if he would do this,

it would be detected at once for itis view. V v

I realize that various changes may be made in the specific form. of the invention as shown and described herein and I, therefore, wish to reserve the right to make such changes as, may-fairly fall within thejscope of the appended claims.

Having now described my invention, I claim: v 1; In combination with a transmission and an outlet therefor, a gear box, means whereby said gear box is secured to said outlet, a shaft insaid gear box operatively connected to said transmission, a second shaft housed in said gear box, means normally connecting said shafts so that said second shaft will be driven by therotation of said flrst mentioned shaft, and means cooperating with said gear box to prevent the removal of the first mentioned shaft from the gearbox as long as the'second shaft is in its normal position. 7 j a 2. In combination, a gear box, a bearing operatively connected with said gear box,arms forming a part of said bearing, a shaft mounted in said bearing, a worm gear secured to said shaft, a driving shaft, a worm thereon meshing with in plain said worm gear, means passing through said arms to prevent said worm gear being disconnected from its driven engagement with said worm while said bearing is in its normal position, and means associated with said first-mentioned means to prevent said bearing from being thus removed.

3. In combination, a gear box, a bearing adapted to be slid into operative relation with said gear box, arms forming a part of said bearing, a shaft housing mounted in said bearing, and means passing through said arms to prevent said shaft housing and bearing from being removed from said gear box.

4. In combination, a gear box, a shaft mounted therein, a bearing for said shaft which bearing is provided with a channel, a closure member for said gear box, said closure member and gear box being provided with bolt holes having an enlarged portion in said gear box, a nut adapted to be slid into said enlarged portion so as to be seated partly within said channel so as to prevent said bearing for said shaft from being moved lengthwise, a bolt adapted to be passed through the bolt holes in the closure member and the gear box, threads carried by said bolt adapted to be screwed within said nut, and means to render inaccessible the headed'end of said bolt.

5. In combination, a gear box, a shaft mounted therein, a bearing for said shaft which bearing is provided with a channel, a closure member for said gear box, said closure member and gear box being provided with bolt holes having an enlarged portion in the gear box, a nut adapted to be slid into said enlarged portion so as to be seated partly within said channel so as to prevent said bearing for said shaft from being moved lengthwise, a bolt adapted to be passed through the bolt holes in the closure member and the gear box, threads carried by said bolt adapted to be screwed within said nut, a cap for said closure member, and means forming a part of said cap to render inaccessible the headed end of said bolt.

6. In combination, a gear box, a shaft mounted therein, a bearing for said shaft and provided with a channel, a closure member for said gear box, said closure member and gear box being provided with bolt holes having an enlarged portion in the gear box, a nut adapted to be slid into said enlarged portion so as to be seated partly within said channel so as to prevent said bearing for said shaft from being moved lengthwise, a bolt adapted to be. passed through the bolt holes in the closure member and the gear box, threads carried by said bolt adapted to be screwed within said nut, a cap for said closure member, means forming a part of said cap to render inaccessible the headed end of said bolt, and means to prevent relative rotation between said cap and closure member.

HERBERT C. RIESINGER. 

